The FESTIVAL FLM dual horn loaded low mid cabinet is part of our premiere touring range, ideally suited for arenas, concerts and outdoor events. The innovative horn loaded enclosure incorporates two 750w RMS 15'' drivers specifically designed to withstand the excursions typical of high output, low mid frequency reproduction. The low mid cabinet can only be used actively with an external controller. Large internal flares ensure frequency dispersion is maintained and resonance is kept to a minimum.

SPECIFICATIONS

Model

FESTIVAL FLM

Type

Horn Loaded Low Mid Cabinet

Frequency Response

From 70Hz - 1Khz

Rated Power

1500w RMS - 3000w Peak

Sensitivity

96db

Maximum SPL

130db

Dispersion

90 degree (H) 60 degree (V)

Nominal Impedance

8 Ohms

Bass

Mid

2 x 15'' Drivers

High-

Crossover

Enclosure

Multi Laminated Birch Ply

Finish

Textured Black Paint

Grille

Black Perforated Steel

Connector

2 x Neutrik NL4

Fittings

2 x Recessed Bar Handles 4 Castors

Dimensions

Weight

AMPLIFICATION

The Blacka Acoustic FESTIVAL FLM is designed to be used with professional power amplifiers capable of producing a minimum specification of 1500w - 3000w power output into 4 ohms.

Care should be taken to avoid amplifier clipping, it is important to understand that a low power amplifier driven into clipping is more likely to damage a loud speaker than a higher power amplifier used within its ratings. Primarily because music signals have a high peak to average crest factor. When an amplifier is severely overdriven its output waveform is clipped resulting in squared off peaks and thus reducing the crest factor. In extreme cases, the waveform can approach that of a square wave. An amplifier is normally capable of producing far more power under these conditions than its undistorted rated power output. The use of very high power amplifiers with outputs greater than those recommended is discouraged.

Care should be taken to avoid switch on surges, which can result in momentary power peaks in excess of specified ratings. When powering up a sound system it is important to switch on the amplifiers after the mixer and control electronics have stabilised. When powering down the system, reverse the sequence and switch off the amplifiers first.

CABLE LENGTH

Each connector panel has two Neutrik Speakon connectors wired in parallel. The second connector allows use of a short link lead to power a secondary parallel loudspeaker. The connectors are wired as follows:

2 Core cable

Pin 1 Positive
Pin 1 Negative

When connecting Blacka Acoustics sound reinforcement to an amplifier it is recommended that the return resistance of the cable used is less than one tenth of the normal impedance of the system or systems in parallel the chart below gives an indication of the maximum possible cable runs for conductor cross sectional areas.

Conductor CSA

Maximum Cable Lengths

4 OHMS

8 OHMS

10 OHMS

1.0 mm

11 m

22 m

44 m

1.5 mm

17 m

34 m

68 m

2.0 mm

22 m

44 m

88 m

2.5 mm

29 m

58 m

116 m

4.0 mm

44 m

88 m

176 m

6.0 mm

66 m

132 m

264 m

SYSTEM CONFIGURATION

The FES FLM can be used with a wide array of Blacka Acoustics speakers. Typical configurations are listed below

It is important that loudspeaker systems are used in a safe manner. Please take some time to review the following points concerning use of Blacka Acoustics Loudspeakers.

Professional loudspeakers are capable of producing extremely high sound levels and should be used with care. Hearing loss is cumulative and can result from levels above 90 DB if people are exposed for a long period , never stand close to loudspeakers driven at high level.

STACKING

The FESFLM is a relatively heavy unit and should always be lifted by two people.

Ensure that the floor or stage is level and solid.

Do not stack speakers too high when outdoors as high winds can topple stacks.

Be aware that these speakers produce very high levels of output. They can move or creep, to avoid any problems it is advisable to strap the speakers down when stacking

RIGGING AND SUSPENSION

WARNING
Suspending the system should only be done by qualified personnel following safe rigging practices. Secure fixings to the buildings structure are vital. Seek help from architects, structural engineers or other specialists if in any doubt.

The FESFLM loudspeaker enclosures are designed for touring and installation applications and can be suspended singularly or multiple arrayed vertically or horizontally by means of the threaded inserts provided within the cabinet and an additional frame and rigging components. The FESFLM enclosures are fitted internally with steel corner reinforcement brackets to ensure that each cabinet is strong enough to be hung from its top. Never suspend one enclosure from another to form an array or cluster using these fittings.

The common practice of using commercially available eye bolts for suspension should only be undertaken with great caution. Eye bolts are strongest along the thread axis. Angling the enclosure will result in an angled pull and it is important to use bolts that are safe in these circumstances. Only forged shoulder eye bolts should be considered and it is important that the thread length is at least 40mm. A flat washer should be inserted between the eye bolt and the enclosure. Formed eye bolts i.e. those which are formed from steel rod bent into an eye should be avoided.